Evaluating the Thermal Pollution Caused by Wastewaters Discharged from a Chain of Coal-Fired Power Plants along  a River

Rosen, Marc A.; Bulucea, Cornelia Aida; Mastorakis, Nikos E.; Bulucea, Carmen A.; Jeles, Andreea C.; Brindusa, Constantin

doi:10.3390/su7055920

Cited by 19 publications

(13 citation statements)

References 14 publications

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“…Assessment of the thermal contamination of sewage discharged from Rovinari, Turceni and Craiova coal-fired power plants in Romania located along the river Jiu was conducted by Canadian and Romanian scientists in the work [8]. Wastewater from the cooling system of a power plant can be reduced by using waste heat for heating local houses or used in other industries.…”

Section: Related Workmentioning

confidence: 99%

Influence of Heat-and-Power Enterprises on the Hydrosphere

Korotkova¹

2018

GEOMATE

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Power units of thermal power plants (TPP), state-owned district power plants (SDPP), combined heat and power plants (CHPP) are mega-complexes, the maintenance of which requires huge investments and significant natural resources (fossil fuels and water). The operation of the units leads to a permanent negative impact on the environment, in spite of strict standards for emissions and discharges. This article analyzes the impact of power plants on water bodies. The following measurements are given for the runoff of the Novocherkassk SDPP to the Don River (Russia, Rostov Region): temperature, odor, power of hydrogen (pH-value), transparency, suspended materials, dissolved oxygen, biological oxygen demand in 5 days (BOD5), TBOD, chemical oxygen demand (COD), mineralization, chlorides, sulfates, hydrogen carbonates, alkalinity, calcium, magnesium, hardness, sodium + potassium, ammonium ions, nitrites, nitrates, phosphorus phosphates, total ferrum, copper, aluminum, synthetic surface active substances, petroleum products, toxicity. It is established that the indicators are within the permissible values established by regulatory documents (Russia).

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Section: Related Workmentioning

confidence: 99%

Influence of Heat-and-Power Enterprises on the Hydrosphere

Korotkova¹

2018

GEOMATE

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“…Large power plants combined with new combustion/gasification technology [1][2][3] are often built in coastal areas and use the sea as cooling water, discharging a large amount of waste heat into the nearby seas [4]. The rise in water temperature and the water stratification caused by thermal discharge [5][6][7] have adverse impacts on the marine ecological environment [8][9][10][11]. Thermal pollution caused mainly by industrial use of water as a cooling agent has been regarded as a severe threat to ecological composition in coastal waters [12].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on the Effect of Heat-Retaining and Diversion Facilities on Thermal Discharge from a Power Plant

Hao

Qiao

Han

et al. 2020

Water

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In order to reduce the influence of thermal discharge from the power plant on the surrounding water environment and the operation efficiency of the power plant, a distorted physical model was presented and applied to Huadian Kemen Power Plant for studying heat transport and analyzing the effects of heat-retaining and diversion facilities near the intake/outlet on the thermal discharge for six scenarios. Field investigations were also used to validate the model. This study is unique as it is the first to elaborate on the impact of heat-retaining and diversion facilities on thermal discharge. The results indicate that the construction of heat-retaining and diversion facilities can decrease the excess temperature at intake to meet the intake requirement and improve the distribution of low temperature rise, but the area of high temperature rise has an increase. When the heat-retaining wall and diversion dike were constructed, the maximum intake temperature rise of Phase III decreased significantly by 1.0–1.3 °C with an average decrease of 0.2 °C, and the maximum value of Phase I and II was reduced by 0.3 °C with little mean change. A comparative experiment with different construction heights was also conducted. Result analysis shows that when the crest elevation was reduced from 3 to 2 m, the influence on the intake temperature rise of Phase I and II could be ignored, and the average temperature rise of Phase III only had an increase of 0.1 °C, suggesting that constructions with 2 m play an effective role in reducing heat return to the intake.

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“…This was due to the one-dimensional approximation of the analytical model so proposed. Rosen et al [6] used Plane Projection (PP) of wastewater thermal pollutant vector on Jiu River to estimate thermal discharge area. The effluent discharged water mass flow rate and the temperature was used to obtain the isotherms at the surface of the water in terms of complex geometrical shapes.…”

Section: Introductionmentioning

confidence: 99%

Analysis of dispersion of heated effluent from power plant: a case study

et al. 2017

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Thermal dispersion of heated effluent in a lake near nuclear power plant is analysed. Lake Bathymetry is established by data collection at a pre-planned matrix of sample points in the lake. Threedimensional geometric model of the lake is developed based on the geometric data collected, using a high accuracy GPS and a dead weight based depth meter at respective sample points of the lake matrix. A turbine type digital flow meter is used to measure the velocities at the intake and blow down points of the lake. Numerical analysis of flow and thermal dispersion is carried out using PLIC-VOF two-phase model with the two-equation k-epsilon model for turbulence closure. Numerical results for varying flow and blow down temperature conditions and wind speed are studied. It is observed that the thermal gradients are steeper in the curved area near the blowdown point. Small increase in main inlet (inlet II) velocity suppresses the dispersion of high-temperature contours significantly. Thermal discharge and dispersed temperature is monitored using temperature sensor mounted floating buoy at various locations in the lake. It is established that the thermal dispersion is influenced by wind velocity and the presence of water hyacinth in the lake.

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Evaluating the Thermal Pollution Caused by Wastewaters Discharged from a Chain of Coal-Fired Power Plants along a River

Cited by 19 publications

References 14 publications

Influence of Heat-and-Power Enterprises on the Hydrosphere

Influence of Heat-and-Power Enterprises on the Hydrosphere

Experimental Study on the Effect of Heat-Retaining and Diversion Facilities on Thermal Discharge from a Power Plant

Analysis of dispersion of heated effluent from power plant: a case study

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